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The Influence of A Magnetic Field on Radiative Damping of Magnetoatmospheric Oscillations

Published online by Cambridge University Press:  08 February 2017

Dipankar Banerjee ,
S.S. Hasan  and
J. Christensen-Dalsgaard
Dipankar Banerjee
Affiliation:
Indian Institute of Astrophysics, Bangalore 560034, India. Armagh Observatory, Armagh, BT61 9DG, N. Ireland
S.S. Hasan
Affiliation:
Indian Institute of Astrophysics, Bangalore 560034, India
J. Christensen-Dalsgaard
Affiliation:
Teoretisk Astrofysik Center, Danmarks Grundforskningsfond Institut for Fysik og Astronomi, Aarhus Universitet, DK-8000 Aarhus C, Denmark

Abstract

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We investigate the influence of a magnetic field on the radiative damping of magnetoatmospheric waves, extending our previous work on the adiabatic modes of an isothermal stratified atmosphere with a uniform vertical magnetic field. Banerjee, Hasan & Christensen-Dalsgaard (1996, 1997) generalized this work to include radiative effects using Newton's law of cooling for a weak magnetic field. The present study examines the variation of the mode damping rate with increasing magnetic field strength. We find that a moderate field suppresses radiative damping.

Keywords

MHDmagnetic fieldsatmosphereoscillations
Type
VII. The Solar Atmosphere
Information
Symposium - International Astronomical Union , Volume 185: New Eyes to See Inside the Sun and Stars , 1998 , pp. 423 - 426
Copyright
Copyright © Kluwer 1998 

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